Website templates

• Edit the HTML templates and layouts in fileadmin/bsdist/theme/templates/backend_layouts
• Edit the backend layout definitions in file .../theme/typoscript/pagets/backendlayouts.ts
• Edit and extend the typoscript configuration for page.10.file in fileadmin/bsdist/theme/typoscript/setup.ts

CSS, JS and other resources

• See directories in fileadmin/bsdist/theme/ (scss and css, js, ...)
• See page.10 (includeCSS, includeJSlibs...) in fileadmin/bsdist/theme/typoscript/setup.ts